The current price of yellow sand is 44*5/(5+4)=220/9, and the current price of stone is 44*4/(5+4)= 176/9.

Yellow sand per ton 1*2/(2+3)=2/5, stone per ton 1-2/5=3/5.

The original unit prices were: 220/9/2/5 =550/9 yuan and 176/9/3/5=880/27 yuan respectively.